Gliese 12

Gliese 12
	; Artist's impression of Gliese 12 and its planet (foreground)
Observation data; Epoch J2000 Equinox J2000
Constellation	Pisces
Right ascension	00h 15m 49.24231s
Declination	+13° 33′ 22.3163″
Apparent magnitude (V)	12.6
Characteristics
Evolutionary stage	main sequence
Spectral type	M4V
Apparent magnitude (V)	12.600±0.04
Apparent magnitude (R)	12.296±0.08
Apparent magnitude (G)	11.399±0.003
Apparent magnitude (J)	8.619±0.020
Apparent magnitude (H)	8.068±0.026
Apparent magnitude (K)	7.807±0.020
Astrometry
Radial velocity (Rv)	51.04±0.26 km/s
Proper motion (μ)	RA: 618.065 mas/yr ; Dec.: 329.446 mas/yr
Parallax (π)	82.1938 ± 0.0326 mas
Distance	39.68 ± 0.02 ly ; (12.166 ± 0.005 pc)
Details
Mass	0.2414±0.0060 M☉
Radius	0.2617+0.0058; −0.0070 R☉
Luminosity (bolometric)	0.00728±0.00015 L☉
Surface gravity (log g)	5.21±0.07 cgs
Temperature	3,296+48; −36 K
Metallicity [Fe/H]	−0.32±0.06 dex
Rotation	85 days
Rotational velocity (v sin i)	<2 km/s
Age	7.0+2.8; −2.2 Gyr
Other designations
	GJ 12, G 32-5, L 1154-29, LHS 1050, LP 464-42, LTT 10083, NLTT 786, PLX 42, TOI-6251, TIC 52005579, 2MASS J00154919+1333218
Database references
SIMBAD	data

Gliese 12 (GJ 12) is a red dwarf star located 39.7 light-years (12.2 parsecs) away in the constellation Pisces. It has about 24% the mass and 26% the radius of the Sun, and a temperature of about 3,296 K (3,023 °C; 5,473 °F). It is an inactive star and hosts one known exoplanet.^[5]

^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008. Archived from the original on 15 August 2019. Retrieved 23 May 2024.
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ Cite error: The named reference Newton2014 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Kuzuhara2024 was invoked but never defined (see the help page).
^ Cite error: The named reference Dholakia2024 was invoked but never defined (see the help page).

[1] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008. Archived from the original on 15 August 2019. Retrieved 23 May 2024.

[GaiaDR3-2] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).

[SIMBAD-3] ^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

[Newton2014-4] Cite error: The named reference Newton2014 was invoked but never defined (see the help page).

[Kuzuhara2024-5] Cite error: The named reference Kuzuhara2024 was invoked but never defined (see the help page).

[Dholakia2024-6] Cite error: The named reference Dholakia2024 was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]

[6]

Observation data Epoch J2000 Equinox J2000
Artist's impression of Gliese 12 and its planet (foreground)
Constellation	Pisces^[1]
Right ascension	00^h 15^m 49.24231^s^[2]
Declination	+13° 33′ 22.3163″^[2]
Apparent magnitude (V)	12.6^[3]
Characteristics
Evolutionary stage	main sequence
Spectral type	M4V^[4]
Apparent magnitude (V)	12.600±0.04^[3]
Apparent magnitude (R)	12.296±0.08^[3]
Apparent magnitude (G)	11.399±0.003^[2]
Apparent magnitude (J)	8.619±0.020^[3]
Apparent magnitude (H)	8.068±0.026^[3]
Apparent magnitude (K)	7.807±0.020^[3]
Astrometry

Radial velocity (R_v)	51.04±0.26^[2] km/s
Proper motion (μ)	RA: 618.065 mas/yr^[2] Dec.: 329.446 mas/yr^[2]
Parallax (π)	82.1938 ± 0.0326 mas^[2]
Distance	39.68 ± 0.02 ly (12.166 ± 0.005 pc)

Details^[5]

Mass	0.2414±0.0060 `M`_☉
Radius	0.2617+0.0058 −0.0070 `R`_☉
Luminosity (bolometric)	0.00728±0.00015 `L`_☉
Surface gravity (log g)	5.21±0.07 cgs
Temperature	3,296+48 −36 K
Metallicity [Fe/H]	−0.32±0.06 dex
Rotation	85 days
Rotational velocity (v sin i)	<2 km/s
Age	7.0+2.8 −2.2^[6] Gyr

Other designations
GJ 12, G 32-5, L 1154-29, LHS 1050, LP 464-42, LTT 10083, NLTT 786, PLX 42, TOI-6251, TIC 52005579, 2MASS J00154919+1333218^[3]
Database references
SIMBAD	data